WO2020246513A1

WO2020246513A1 - Cooling system

Info

Publication number: WO2020246513A1
Application number: PCT/JP2020/021987
Authority: WO
Inventors: 良至堀; 山崎　淳; 謙司中島; 家田　恒; 千尋甲斐; 邦枝中江; 雅巳谷口
Original assignee: 株式会社デンソー
Priority date: 2019-06-07
Filing date: 2020-06-03
Publication date: 2020-12-10

Abstract

This cooling system that cools an object to be cooled comprises: a cooling box (2) that houses the object to be cooled; and a cooling device (3) that recovers gas from inside the cooling box, cools the gas outside the cooling box, and supplies the cooled gas to the inside of the cooling box (3). The cooling device can be detachably attached to the cooling box, and the cooling box has a wall (21) that faces the cooling device and separates the inside and the outside of the cooling box.

Description

Cooling system

Cross-reference to related applications

This application is based on Japanese Patent Application No. 2019-10732 filed on June 7, 2019 and Japanese Patent Application No. 2020-0163888 filed on February 3, 2020. The description is incorporated by reference.

The present invention relates to a cooling system.

Patent Document 1 discloses a cooling device that cools the air inside the cold insulation box. This cooling device is detachably attached to the outer wall member of the cold insulation box body. Of this cooling device, the evaporator side and the condenser side are integrated with a heat insulating member interposed therebetween.

JP-A-2017-150700

According to the inventor's consideration, when the cooling device of Patent Document 1 is removed from the cold insulation box, a part of the heat insulating material is also removed. According to the study of the inventor, since this heat insulating material also serves as a wall of the cold insulation box, if the cooling device of Patent Document 1 is removed from the cold insulation box, the cold insulation function of the cold insulation box is significantly deteriorated. An object of the present disclosure is to make a cooling device for cooling the air inside a cold storage box removable while suppressing deterioration of the cold storage function of the cold storage box.

According to one aspect of the present disclosure, the cooling system for cooling the object to be cooled is a cooling box accommodating the object to be cooled, and a cooling box that collects gas from the inside of the box and cools the outside of the box to cool the object. The cooling device is provided with a cooling device that supplies the gas after the cooling into the cold storage box, and the cooling device can be detachably attached to the cold storage box, and the cold storage box faces the cooling device and is said to be the same. It has a wall that separates the inside and the outside of the cold storage box.

In this way, the cooling device cools the expectation outside the cold storage box and supplies the cooled gas into the cold storage box. Therefore, the need to remove the wall is reduced when the cooling device is removed from the cold box. As a result, when the cooling device is removed from the cold storage box, the gas inside the cold storage box is unlikely to flow out to the outside of the cold storage box. Therefore, the cooling device can be removed while suppressing the deterioration of the cold insulation function of the cold insulation box.

Note that the reference reference numerals in parentheses attached to each component or the like indicate an example of the correspondence between the component or the like and the specific component or the like described in the embodiment described later.

It is a perspective view of the cooling system in 1st Embodiment. It is a perspective view of the state which omitted the cooling device from a cooling system. It is a perspective view of a pedestal. It is a perspective view of the state where the front wall of a cooling device is removed. It is a front view of the state which removed the front wall of a cooling device. It is sectional drawing of the cooling system in the VI-VI cross section of FIG. It is a top view which shows the state which a plurality of cooling systems are densely arranged. It is a perspective view of the state which omitted the cooling device from the cooling system in 2nd Embodiment. It is sectional drawing of the cooling system of 2nd Embodiment in the same cross section as FIG. It is a perspective view of the cooling system in 3rd Embodiment. It is a perspective view of the state which omitted the cooling device from the cooling system in 4th Embodiment. It is a rear view of the cooling device 3 in 4th Embodiment. It is a perspective view of the state which omitted the cooling device from the cooling system in 5th Embodiment. It is a rear view of the cooling device 3 in 5th Embodiment. It is a perspective view of the state in which the cooling device is omitted from the cooling system in the sixth embodiment. It is sectional drawing of the 1st frame member fixed to the cold insulation box in 6th Embodiment. It is a rear view of the cooling device 3 in the sixth embodiment.

(First Embodiment)
Hereinafter, embodiments will be described. Hereinafter, the terms front, back, and lateral directions are used, but these are directions based on the directions that are conveniently determined to be front in the cooling system, and these directions are relative to the outside of the cooling system. Note that it does not limit the attitude of the cooling system. However, the terms "upper" and "lower" mean "upper" and "lower" based on the direction of gravity in the state where the cooling system is used. When the cooling system is not actually used, such as in manufacturing, sales, and transportation, the upper and lower parts do not limit the attitude of the cooling system with respect to the outside of the cooling system.

The cooling system has a size and weight that can be carried by a person, and can be carried in and out of the loading platform of a transport truck, for example. That is, the cooling system is a small mobile cooling system.

As shown in FIGS. 1, 2, 3, 4, 5, and 6, the cooling system of the present embodiment includes a pedestal 1, a cold insulation box 2, and a cooling device 3. The pedestal 1 is a plate-shaped member whose plate surfaces intersect in the vertical direction and are more specifically arranged perpendicular to the vertical direction. The cold insulation box 2 and the cooling device 3 are placed on the upper surface of the pedestal 1.

As shown in FIG. 3, the pedestal 1 has a substantially rectangular first portion 11 and a substantially rectangular second portion 12. In FIG. 3, the boundary between the first part 11 and the second part 12 is represented by a broken line as a virtual line. The second part 12 is located behind the first part 11. Then, the rear edge portion of the first portion 11 and a part of the front edge portion of the second portion 12 are integrally connected. The size of the second part 12 is larger than that of the first part 11 in the front-rear direction and the lateral direction.

The cooling device 3 is placed on the upper surface of the first part 11, and the cold insulation box 2 is placed and fixed on the upper surface of the second part 12. Fixing may be realized by any method such as adhesion, fastening, and integral molding.

The cold storage box 2 is a box that houses the object to be cooled. The object to be cooled may be any food, chemicals, or the like as long as it is meaningful to be cooled. As shown in FIGS. 1 and 2, the cold insulation box 2 is a box having a substantially rectangular parallelepiped shape, and its outer shell contains a heat insulating material. This outer shell surrounds the internal cooling chamber 2x.

As shown in FIG. 2, in the outer shell, the front wall 21 facing the cooling device 3 has a first communication hole 211 and a second communication hole 212 for communicating the cooling chamber 2x and the outside of the cold insulation box 2. It is formed. The air recovered from the cooling chamber 2x to the cooling device 3 passes through the first communication hole 211. The air supplied from the cooling device 3 to the cooling chamber 2x passes through the second communication hole 212 after being cooled by the cooling device 3. The first communication hole 211 is arranged below the second communication hole 212. The air moving back and forth between the cooling chamber 2x and the inside of the cooling device 3 corresponds to the first gas.

The cooling device 3 is a device that collects air from the cooling chamber 2x, cools it outside the cold storage box 2, and supplies the cooled air into the cold storage box 2. The cooling device 3 includes a casing 31, a battery 32, a first partition member 33, a second partition member 34, a compressor 35, a condenser 36, an expansion valve 37, and an evaporator 38. Further, the cooling device 3 has an exhaust fan 39, a blowout fan 40, a drain pan 41, an evaporating dish 42, an inverter 43, and an ECU 46.

The casing 31 is a member that constitutes the outer shell of the cooling device 3, and accommodates other components of the cooling device 3. The outer shape of the cooling device 3 has a substantially rectangular parallelepiped shape, and the length in the front-rear direction is shorter than the length in the vertical direction and shorter than the length in the horizontal direction. The back side of the casing 31 faces the front wall 21 of the cold insulation box 2 so as to be in contact with it. Hereinafter, of the casing 31, the surface facing the back surface is referred to as a front surface, and the four surfaces between the front surface and the back surface that intersect the front surface and the back surface are referred to as side surfaces.

The casing 31 is formed with an outside air introduction hole 311, an outside air discharge hole 312, an inside air recovery hole 313, and an inside air supply hole 314 that communicate the inside of the casing 31 with the outside of the casing 31.

As shown in FIGS. 1, 4, and 6, the outside air introduction hole 311 is provided on the side surface 31b, which is one of the four side surfaces of the casing 31, which is different from the upper surface and the lower surface. It is formed. The outside air introduction hole 311 is a hole for introducing gas from the outside of the casing 31 into the condenser 36 in the casing 31.

The outside air discharge hole 312 is formed on the front surface of the casing 31 as shown in FIGS. 1 and 4. The outside air discharge hole 312 is a hole for discharging the air that has exchanged heat with the refrigerant in the condenser 36 to the outside of the casing 31.

As shown in FIG. 6, the inside air recovery hole 313 is formed on the back surface of the casing 31 so as to face the first communication hole 211 and communicate with each other. The air recovered from the cooling chamber inside the cold insulation box 2 to the cooling device 3 passes through the inside air recovery hole 313.

As shown in FIG. 6, the inside air supply hole 314 is formed on the back surface of the casing 31 so as to face the second communication hole 212 and communicate with each other. The air supplied from the cooling device 3 to the cooling chamber of the cold insulation box 2 passes through the inside air supply hole 314 after being cooled by the cooling device 3. The inside air supply hole 314 is above the inside air recovery hole 313.

Further, the casing 31 is formed with a recovery duct 315 and a supply duct 316 on the back side (that is, the cold insulation box 2 side).

As shown in FIG. 6, the recovery duct 315 is a pipe-shaped portion that protrudes from the back surface of the casing 31 toward the cold insulation box 2 side so as to surround the inside air recovery hole 313. One end of the recovery duct 315 is connected to the back surface of the casing 31, and the other end is press-fitted into the first communication hole 211.

As shown in FIG. 6, the supply duct 316 is a pipe-shaped portion that protrudes from the back surface of the casing 31 toward the cold insulation box 2 side so as to surround the inside air supply hole 314. One end of the supply duct 316 is connected to the back surface of the casing 31, and the other end is press-fitted into the second communication hole 212.

By press-fitting the recovery duct 315 and the supply duct 316, the cooling device 3 is in a state of being detachably attached to the outside of the front wall 21 with respect to the cold insulation box 2. In this way, the cooling device 3 can be detachably attached to the cold insulation box 2 in a manual manner that does not require a tool for attachment / detachment. Such a tool-less attachment / detachment structure facilitates attachment / detachment of the cooling device and the cold insulation box. When the cooling device 3 is removed from the cold insulation box 2 as shown in FIG. 2, the recovery duct 315 and the supply duct 316 are removed from the first communication hole 211 and the second communication hole 212, respectively.

The battery 32 is arranged at the end of the casing 31 on the side surface opposite to the side surface on which the outside air introduction hole 311 is formed. As another example, the battery 32 may be arranged in contact with the side surface opposite to the side surface on which the outside air introduction hole 311 is formed, outside the casing 31. This battery supplies electric power for operation to the expansion valve 37, the inverter 43, and the ECU 46.

The first partition member 33 is a plate member that partitions the heat absorbing chamber 31x in which the condenser 36 is arranged and the heat radiating chamber 31y in which the evaporator 38 is arranged inside the casing 31. The first partition member 33 may include a heat insulating material that hinders the transfer of heat between the heat absorbing chamber 31x and the heat radiating chamber 31y. The second partition member 34 is a plate member for forming an air passage in the endothermic chamber 31x.

The heat absorbing chamber 31x is formed on the back side and the upper side of the heat radiating chamber 31y. The above-mentioned outside air introduction hole 311 and outside air discharge hole 312 are open to the heat dissipation chamber 31y, and the inside air recovery hole 313 and the inside air supply hole 314 are open to the heat absorption chamber 31x.

The compressor 35 is arranged in the machine room 31z, which is different from the heat absorbing chamber 31x and the heat radiating chamber 31y, in the casing 31. The first partition member 33 and the second partition member 34 also partition the machine room 31z from the heat absorption chamber 31x and the heat dissipation chamber 31y. The outside air introduction hole 311 is open to the machine room 31z. The compressor 35 is a fluid machine that compresses and discharges the refrigerant, and is operated by an alternating current supplied from the inverter 43.

The condenser 36 is a heat exchanger that is arranged in the heat dissipation chamber 31y and exchanges heat between the air in the heat dissipation chamber 31y and the refrigerant. The capacitor 36 corresponds to the heat dissipation part. The expansion valve 37 is arranged in the machine room 31z, and the refrigerant is decompressed and expanded by narrowing the passage of the refrigerant. The expansion valve 37 is an electric expansion valve that is operated by the electric power supplied from the battery 32. The evaporator 38 is arranged in the endothermic chamber 31x, and is a heat exchanger that exchanges heat between the air in the endothermic chamber 31x and the refrigerant. The evaporator 38 corresponds to a cooling unit.

The exhaust fan 39 is arranged in the outside air discharge hole 312 in the heat absorption chamber 31x. The exhaust fan 39 sucks the air that has passed through the condenser 36 in the heat radiating chamber 31y, and blows the sucked air to the outside of the cold insulation box 2 and the cooling device 3 through the outside air discharge hole 312.

The blowout fan 40 is arranged in the heat absorbing chamber 31x so as to face the inside air supply hole 314. The blowout fan 40 sucks the air that has passed through the evaporator 38 in the heat absorption chamber 31x, and the sucked air is introduced into the cooling chamber 2x of the cold insulation box 2 through the inside air supply hole 314, the second communication hole 212, and the supply duct 316. Blow out.

Due to the action of the blowout fan 40, as shown by the arrow in FIG. 6, the air (that is, the inside air) in the cooling chamber 2x absorbs heat from the cooling chamber 2x through the first communication hole 211 and the inside air recovery hole 313. Enter the room 31x. The inside air that has entered the heat absorption chamber 31x rises in the heat absorption chamber 31x, passes through the evaporator 38, is then sucked by the blowout fan 40, and passes through the inside air supply hole 314 and the second communication hole 212 from the heat absorption chamber 31x. It is blown out to the cooling chamber 2x. The inside air corresponds to the first gas.

Further, due to the action of the exhaust fan 39 as described above, as shown by the arrow in FIG. 4, the outside air (that is, the outside air) of the cold insulation box 2 and the cooling device 3 is cooled by the cold insulation box 2 through the outside air introduction hole 311. Enter the machine room 31z in the casing 31 from the outside of the device 3. The outside air that has entered the machine room 31z passes through the surface of the compressor 35. The outside air that has passed through the surface of the compressor 35 enters the heat dissipation chamber 31y from the machine room 31z and passes through the surface of the condenser 36. The outside air that has passed through the surface of the condenser 36 is sucked in by the exhaust fan 39, and is discharged from the inside of the casing 31 to the outside of the cold insulation box 2 and the cooling device 3 through the outside air discharge hole 312. The outside air corresponds to the second gas.

The compressor 35, the condenser 36, the expansion valve 37, and the evaporator 38 are connected by the pipes shown in FIGS. 4 and 5, and form a vapor compression refrigeration cycle. The compressor 35 compresses the refrigerant flowing out of the evaporator 38 and sends it to the condenser 36 side. The condenser 36 exchanges heat between the refrigerant discharged from the compressor 35 and the outside air to release the heat of the refrigerant to the outside air and condense the refrigerant. The expansion valve 37 depressurizes the refrigerant condensed by the condenser 36. The evaporator 38 heat-exchanges the refrigerant decompressed by the condenser 36 with the inside air to evaporate the refrigerant and cool the inside air. Therefore, the evaporator 38 has a lower temperature than the condenser 36 during the operation of the cooling device 3.

Due to the action of such a refrigeration cycle, the air cooled by the evaporator 38 and entering the cooling chamber 2x from the inside air supply hole 314 and the second communication hole 212 is cooled while descending in the cooling chamber 2x as shown in FIG. Cool T.

The drain pan 41 is a funnel-shaped member that penetrates the first partition member 33 from the heat absorbing chamber 31x to the heat radiating chamber 31y. The drain pan 41 is arranged below the evaporator 38 in the endothermic chamber 31x, receives the condensed water generated and dropped by the evaporator 38, and guides the received condensed water to the heat dissipation chamber 31y. Further, the drain pan 41 is arranged above the evaporating dish 42 in the heat dissipation chamber 31y, and has a shape in which the condensed water led to the heat dissipation chamber 31y is dropped onto the evaporating dish 42.

The evaporating dish 42 is arranged below the condenser 36 and the drain pan 41 in the heat dissipation chamber 31y. The evaporating dish 42 has a shape that receives the condensed water dropped from the drain pan 41 and guides the received condensed water to the lower side of the condenser 36.

Therefore, the condensed water dropped on the evaporating dish 42 evaporates due to the heat of the refrigerant passing through the condenser 36. As a result, the temperature of the capacitor 36 also decreases, and the cooling effect in the cooling chamber 2x also increases.

The inverter 43 receives power from the battery 32 and supplies an alternating current to the compressor 35 in a form corresponding to a command from the ECU 46 to control the operation of the compressor 35 such as the rotation speed.

The ECU 46 is a microcomputer provided with a CPU, RAM, ROM, flash memory, etc. (not shown). RAM, ROM, and flash memory are all non-transitional substantive storage media. The CPU executes a program stored in the ROM or the flash memory, and uses the RAM as a work area at that time. By executing the program by such a CPU, various operations of the ECU 46 are realized.

Here, the configurations of the pedestal 1, the cold storage box 2, and the cooling device 3 will be described in more detail. As shown in FIG. 1, the cooling device 3 is assembled to the cold insulation box 2 so that it is placed on the first part 11 of the pedestal 1. At this time, the outer edge portion 111 of the first portion 11 protrudes from the side surface 31b in which the outside air introduction hole 311 is formed in the casing 31 to the side facing the side surface. Similarly, the outer edge portion 21z of the front wall 21 projects from the side surface of the cooling device 3 toward the side surface facing the side surface. Therefore, the side surface 31b of the casing 31 on which the outside air introduction hole 311 is formed is offset from the surface 22 of the cold insulation box 2 to which the outer edge portion 21z belongs so as to be recessed.

By doing so, it is possible to place an obstacle very close to the outside air introduction hole 311 formed on the side surface of the casing 31 by placing the obstacle on the outer edge portion 111 of the first portion 11 and the outer edge portion 21z of the front wall 21. It becomes difficult due to the existence of. Therefore, a gap is likely to be formed around the outside air introduction hole 311 outside the casing 31, and the pressure loss of the outside air introduced into the casing 31 and discharged can be reduced.

Similarly, the outer edge portion 112 of the first portion 11 protrudes from the front surface of the casing 31 on which the outside air discharge hole 312 is formed to the side facing the front surface. In this way, it becomes difficult to place an obstacle very close to the outside air discharge hole 312 formed on the front surface of the casing 31 due to the presence of the outer edge portion 112 of the first portion 11. Therefore, a gap is likely to be formed around the outside air introduction hole 311 outside the casing 31, and the pressure loss of the outside air introduced into the casing 31 and discharged can be reduced.

For example, as shown in FIG. 7, a plurality of cooling systems including a set of a pedestal 1, a cold insulation box 2, and a cooling device 3 may be densely arranged in a matrix. In such a case, the outer edge portion of the first part 11 and the outer edge portion of the front wall 21 of the cold insulation box 2 come into contact with the cold insulation box 2 and the first portion 11 of the adjacent cooling system. Due to this contact, a gap is formed around the outside air introduction hole 311 and the outside air discharge hole 312 outside the casing 31. As a result, the pressure loss of the outside air introduced into the casing 31 and discharged can be reduced.

Further, the evaporator 38 and the condenser 36 are lined up in the direction along the front wall 21. More specifically, the capacitors 36 are arranged in the vertical direction of the front wall 21. As described above, since the evaporator 38 and the condenser 36 are arranged in the direction along the front wall 21, the direction in which the evaporator 38 and the condenser 36 are orthogonal to each other as compared with the case where the evaporator 38 and the condenser 36 are arranged in the direction orthogonal to the front wall 21. The thickness of the casing 31 can be reduced. As a result, the physique of the cooling system in the direction in which the cold insulation box 2 and the cooling device 3 overlap (that is, the front-rear direction) can be suppressed.

Then, the evaporator 38 is arranged in the upward direction of the condenser 36. By doing so, the cold air in the evaporator 38 is lowered to cool the condenser 36, and the ability of the cooling device 3 to cool the inside air is improved.

Further, in the casing 31, as shown in FIG. 1, the surface on which the outside air introduction hole 311 is formed and the surface on which the outside air discharge hole 312 is formed are oriented in different directions. By doing so, the phenomenon that the high temperature outside air discharged from the outside air discharge hole 312 is immediately introduced into the casing 31 from the outside air introduction hole 311, that is, a short circuit is less likely to occur.

Further, during the operation of the cooling device 3, the outside air introduced into the casing 31 from the outside air introduction hole 311 passes through the compressor 35, then through the condenser 36, and then does not pass through the compressor 35, as shown by the arrow in FIG. It is discharged to the outside of the casing 31 from the outside air discharge hole 312. Since the outside air passing through the compressor 35 is the outside air before the temperature rises through the condenser 36, the influence of the raised outside air on the compressor 35 can be suppressed.

As described above, the front wall 21 of the cold insulation box 2 is formed with a first communication hole 211 through which the inside air collected by the cooling device 3 from the inside of the cold insulation box 2 passes. Further, the front wall 21 is formed with a second communication hole 212 through which the inside air supplied from the cooling device 3 to the cold insulation box 2 passes after being cooled by the cooling device 3.

Due to the presence of such a front wall 21, even if the cooling device 3 is removed from the cold insulation box 2, the front wall 21 is not removed from the cold insulation box 2. Therefore, it is difficult for the inside air inside the cold storage box 2 to flow out to the outside of the cold storage box 2. Therefore, the cooling device can be removed while suppressing the deterioration of the cold insulation function of the cold insulation box 2.

The first communication hole 211 and the second communication hole 212 after the cooling device 3 is removed from the cold insulation box 2 can be easily closed after the cooling device 3 is removed. Further, even if the first communication hole 211 and the second communication hole 212 are not blocked, the cold insulation function of the cold insulation box 2 after the cooling device 3 is removed due to the presence of the front wall 21 itself is lower than before. It will be reduced.

Further, on the front wall 21, the first communication hole 211 and the second communication hole 212 are separately formed. In this way, by providing two communication holes, the first communication hole and the second communication hole, on the wall, the first communication hole and the second communication hole are matched with the wind speed of the air blown from the second communication hole 212. There is a degree of freedom in arranging the position of in a position where shortcuts can be sufficiently reduced. The shortcut of the inside air means that the air that has entered the cooling chamber 2x through the second communication hole 212 immediately returns to the cooling device 3 through the first communication hole 211. When the shortcut becomes remarkable, the cooling capacity in the cold insulation box 2 decreases.

(Second Embodiment)
Next, the second embodiment will be described with reference to FIGS. 8 and 9. In the cooling system of the present embodiment, the cold insulation box 2 is different from the first embodiment in that the first communication hole 211 and the second communication hole 212 are replaced with the single common communication hole 213 shown in FIG. It is a point. The front wall 21 is not formed with other holes for communicating the inside air between the cold insulation box 2 and the inside of the cooling device 3. The other configuration of the cold insulation box 2 is the same as that of the first embodiment.

In the common communication hole 213, the air recovered from the cooling chamber 2x to the cooling device 3 passes, and the air supplied from the cooling device 3 to the cooling chamber 2x after being cooled by the cooling device 3 passes through. The common communication hole 213 is formed in the front wall 21. Various forms may be adopted as necessary for the position and size of the common communication hole 213 formed on the front wall 21.

The cooling device 3 has been modified with respect to the first embodiment in response to the replacement of the first communication hole 211 and the second communication hole 212 with the common communication hole 213. Specifically, as shown in FIG. 9, the recovery duct 315 and the supply duct 316 are replaced with a single common duct 317.

The common duct 317 is formed on the back side (that is, the cold insulation box 2 side) of the casing 31. As shown in FIG. 9, the common duct 317 is a pipe-shaped portion protruding from the back surface of the casing 31 toward the cold insulation box 2 side so as to surround the inside air recovery hole 313 and the inside air supply hole 314. One end of the common duct 317 is connected to the back surface of the casing 31, and the other end is press-fitted into the common communication hole 213. In the present embodiment, this press-fitting realizes a user-removable attachment of the cooling device 3 to the cold insulation box 2.

In the present embodiment, both the inside air recovery hole 313 and the inside air supply hole 314 are arranged above the center in the vertical direction on the front wall 21. The point that the inside air recovery hole 313 is arranged below the inside air supply hole 314 is the same as that of the first embodiment. The configuration of the pedestal 1 is the same as that of the first embodiment.

In the above configuration, due to the action of the blowout fan 40, as shown by the solid line arrow in FIG. 9, the air (that is, the inside air) in the cooling chamber 2x is changed to the common communication hole 213, the common duct 317, and the inside air recovery hole 313. It enters the heat absorbing chamber 31x from the cooling chamber 2x through the cooling chamber 2x. The inside air that has entered the heat absorption chamber 31x passes through the evaporator 38 in the heat absorption chamber 31x, is then sucked by the blowout fan 40, and passes through the inside air supply hole 314, the common duct 317, and the common communication hole 213 from the heat absorption chamber 31x. It is blown out to the cooling chamber 2x. At this time, if the rotation speed of the blowout fan 40 is sufficiently high, even if the inside air recovery hole 313 and the inside air supply hole 314 are close to each other as in the present embodiment, the inside air shortcut as shown by the broken line arrow in FIG. 9 can be used. It can be suppressed sufficiently.

As described above, the cooling system of the present embodiment can also exert the same effect as that of the first embodiment. Further, in the present embodiment, the number of communication holes formed in the front wall 21 for allowing the inside air to pass between the cooling chamber 2x and the inside of the cooling device 3 is one.

By doing so, the peripheral length of the communication hole can be shortened as compared with the first embodiment. For example, when the total opening area of the first communication hole 211 and the second communication hole 212 in the first embodiment and the opening area of the common communication hole 213 in the present embodiment are the same, the first communication hole 211 and the second communication hole 211 and the second communication hole 211 are connected. The common communication hole 213 can be made shorter than the total circumference of the holes 212. Then, by shortening the peripheral length of the communication hole, it is possible to reduce the leakage of the inside air through the communication hole provided in the front wall 21, and further reduce the heat leakage through the communication hole. it can.

Further, since the number of communication holes provided in the front wall 21 for allowing the inside air to pass between the cooling chamber 2x and the cooling device 3 is one, the common communication holes 213 allowed in the design of the cold insulation box 2 Positional tolerances and dimensional tolerances can be set large. When the number of communication holes provided in the front wall 21 for allowing the inside air to pass between the cooling chamber 2x and the cooling device 3 is two, the individual communication holes are individually considered in consideration of the accumulation of variations in the positions during processing. It is necessary to reduce the allowable position tolerance, dimensional tolerance, etc. for the communication holes.

(Third Embodiment)
Next, the third embodiment will be described with reference to FIG. In the first embodiment, the user-removable attachment of the cooling device 3 to the cold insulation box 2 is realized by press-fitting the recovery duct 315 and the supply duct 316 into the first communication holes 211 and the second communication holes 212, respectively. ing. Further, in the second embodiment, the user-removable attachment of the cooling device 3 to the cold insulation box 2 is realized by press-fitting the common duct 317 into the common communication hole 213.

On the other hand, in the detachable attachment of the cooling device 3 to the cold insulation box 2 in the present embodiment, in addition to the above-mentioned press-fitting, the belt portion 50 shown in FIG. 10 enables the user to attach and detach the cooling device 3. ing. The belt portion 50 corresponds to a detachable structure.

The belt portion 50 has a first belt string 51, a first connector 52, a second belt string 53, and a second connector 54. The first belt string 51 is a flexible elongated band-shaped member, one end of which is fixed to a surface 22 of the cold insulation box 2 different from the surface belonging to the front wall 21, and the other end of the first connector 52. It is attached to. The first connector 52 is configured so that it can be engaged with the second connector 54 by a predetermined locking operation of the user and can be disengaged with the second connector 54 by a predetermined unlocking operation of the user. ing.

The second belt string 53 is a flexible elongated band-shaped member, one end of which is fixed to the outer surface of the cold insulation box 2 on the opposite side of the surface 22 and the other end is attached to the second connector 54. Has been done. The second connector 54 is configured so that it can be engaged with the first connector 52 by the locking operation and can be disengaged with the first connector 52 by the unlocking operation.

The first belt string 51 and the second belt string 53 may have elasticity in the longitudinal direction and can be expanded and contracted. Alternatively, the length of the first belt string 51 from the one end of the first belt string 51 to the first connector 52 may be adjustable. Alternatively, the length of the second belt string 53 from the one end of the second belt string 53 to the second connector 54 may be adjustable. The first connector 52 and the second connector 54 may be, for example, a buckle.

Here, the procedure for attaching / detaching the cooling device 3 and the cold insulation box 2 will be described. In the description of this procedure, it is assumed that the configuration other than the belt portion 50 in the cooling system of the present embodiment is the same as that of the first embodiment. However, in the following procedure, the recovery duct 315 and the supply duct 316 may be replaced with the common duct 317, and the first communication hole 211 and the second communication hole 212 may be replaced with the common communication hole 213. By replacing it in this way, the configuration other than the belt portion 50 in the cooling system of the present embodiment can be made the same as that of the second embodiment.

When the cooling device 3 is mounted on the cold insulation box 2, the user inserts the recovery duct 315 and the supply duct 316 of the cooling device 3 into the first communication hole 211 and the second communication hole 212, respectively. As a result, the cooling device 3 is positioned with respect to the cold insulation box 2.

After that, the user engages the first connector 52 and the second connector 54 by performing the above-mentioned predetermined locking operation on the first connector 52 and the second connector 54. The locking operation is an operation that does not use a tool (for example, an insertion operation to a predetermined position by the user's hand). At this time, the belt portion 50 is wound around the casing 31 of the cooling device 3, and the cooling device 3 is sandwiched between the belt portion 50 and the front wall 21. Then, by this engagement, the first belt string 51 and the second belt string 53 are stretched so as to generate tension in the longitudinal direction.

At this time, the user can use the length of the first belt string 51 from the one end of the first belt string 51 to the first connector 52, or the second belt from the one end of the second belt string 53 to the second connector 54. This tension may be adjusted by adjusting the length of the string 53.

As a result, the cooling device 3 is pushed in the direction of the cold insulation box 2 by the belt portion 50 and is restrained so as not to be separated from the cold insulation box 2. This is because the belt portion 50 urges the cold insulation box 2 and the cooling device 3 in the direction of approaching each other. As a result, the attachment of the cooling device 3 to the cold insulation box 2 becomes stronger. As described above, the mounting of the cooling device 3 on the cold insulation box 2 is completed.

When removing the cold insulation box 2 from the cooling device 3, the user releases the engagement between the first connector 52 and the second connector 54 by performing the above-mentioned predetermined unlocking operation on the first connector 52 and the second connector 54. To do. The unlocking operation is an operation that does not use a tool (for example, a user's manual pressing operation of a predetermined portion). As a result, the belt portion 50 eliminates the state in which the cold insulation box 2 and the cooling device 3 are urged and restrained in the direction of approaching each other.

After that, the user pulls out the recovery duct 315 and the supply duct 316 of the cooling device 3 from the first communication hole 211 and the second communication hole 212, respectively. With the above, the removal of the cold insulation box 2 from the cooling device 3 is completed.

In the present embodiment, the recovery duct 315 and the first communication hole 211, the supply duct 316 and the second communication hole 212, and the common duct 317 and the common communication hole 213 may be press-fitted or loosely fitted. It may be a ductual relationship.

As described above, the cooling system of the present embodiment is provided with the belt portion 50 as a detachable structure that enables the cooling device 3 to be detachably attached to the cold insulation box 2 in a form that does not require a detachable tool. ing. Such a tool-less attachment / detachment structure facilitates attachment / detachment of the cooling device and the cold insulation box.

In the present embodiment, the belt portion 50 is fixed to the cold insulation box 2, and the cooling device 3 is sandwiched and restrained between itself and the cold insulation box 2 by performing the locking operation. However, the belt portion 50 may be fixed to the cooling device 3. In that case, the belt portion 50 is locked around the cold insulation box 2 and restrains the cold insulation box 2 by sandwiching it between itself and the cooling device 3. In both the former example and the latter example, the belt portion 50 urges the cold insulation box 2 and the cooling device 3 in the direction in which the cold insulation box 2 and the cooling device 3 approach each other. Further, the belt portion 50 may wrap around both the cold insulation box 2 and the cooling device 3 to urge the cold insulation box 2 and the cooling device 3 in a direction in which the cold insulation box 2 and the cooling device 3 approach each other.

Further, in the belt portion 50 of the present embodiment, the first belt string 51 and the second belt string 53 are indirectly connected by the engagement of the first connector 52 and the second connector 54, so that the cold insulation box is provided by the belt portion 50. 2 and the cooling device 3 are constrained. However, the first connector 52 and the second belt string 53 are not essential. For example, when the first belt string 51 and the second belt string 53 are manually tied by the user, the cold insulation box 2 and the cooling device 3 are restrained by the belt portion 50. In this case, the work of tying the first belt string 51 and the second belt string 53 corresponds to the locking work, and the work of untying the first belt string 51 and the second belt string 53 corresponds to the unlocking work.

Further, the belt portion 50 of the present embodiment has two belt strings, a first belt string 51 and a first connector 52, but this is not essential. For example, by fixing the first connector 52 directly to the surface 22, the first belt string 51 can be eliminated.

(Fourth Embodiment)
Next, the fourth embodiment will be described with reference to FIGS. 11 and 12. The detachable attachment of the cooling device 3 to the cold insulation box 2 in the present embodiment can be detached by the user by the magnetic force detachable portions shown in FIGS. 11 and 12 in addition to the press-fitting as in the first and second embodiments. It can be installed. The magnetic force desorption portion corresponds to the desorption structure.

The magnetic force desorption portion includes a first magnet 61, a second magnet 62, a third magnet 63, a fourth magnet 64, a first magnetic body 65, a second magnetic body 66, a third magnetic body 67, and a fourth magnetic body 68. .. Each of the first magnet 61, the second magnet 62, the third magnet 63, and the fourth magnet 64 is an object that generates a magnetic field, and may be a permanent magnet or an electromagnet.

As shown in FIG. 11, the first magnet 61, the second magnet 62, the third magnet 63, and the fourth magnet 64 are separated from each other in the portion of the front wall 21 of the cold insulation box 2 facing the cooling device 3. It is attached.

The first magnetic body 65, the second magnetic body 66, the third magnetic body 67, and the fourth magnetic body 68 are ferromagnetic materials (for example, soft magnetic materials such as iron) that are not magnets, respectively. As shown in FIG. 12, the first magnetic body 65, the second magnetic body 66, the third magnetic body 67, and the fourth magnetic body 68 are attached to each other on the wall of the casing 31 facing the cold insulation box 2, that is, the back side. Installed apart. The first magnetic body 65, the second magnetic body 66, the third magnetic body 67, and the fourth magnetic body 68 are the first magnet 61 and the second magnet, respectively, when the cooling device 3 is mounted on the cold insulation box 2. 62, the third magnet 63, and the fourth magnet 64 are arranged so as to face each other and come into contact with each other.

Here, the procedure for attaching / detaching the cooling device 3 and the cold insulation box 2 will be described. In the description of this procedure, the configuration other than the magnetic force desorption portion in the cooling system of the present embodiment is the same as that of the first embodiment, but it may be the same as that of the second embodiment.

When the cooling device 3 is mounted on the cold insulation box 2, the user inserts the recovery duct 315 and the supply duct 316 of the cooling device 3 into the first communication hole 211 and the second communication hole 212, respectively. As a result, the cooling device 3 is positioned and mounted on the cold insulation box 2.

At this time, the first magnetic body 65, the second magnetic body 66, the third magnetic body 67, and the fourth magnetic body 68 face the first magnet 61, the second magnet 62, the third magnet 63, and the fourth magnet 64, respectively. And make contact. Then, a magnetic force that attracts each other is generated between the magnetic material and the magnet that are in contact with each other facing each other. As a result, the cooling device 3 and the cold insulation box 2 are urged in each other direction due to this magnetic force. As a result, the attachment of the cooling device 3 to the cold insulation box 2 becomes stronger. At this time, the magnets and the magnetic materials facing each other may be close to each other to the extent that the magnetic force is generated with sufficient strength without contacting each other.

When removing the cold insulation box 2 from the cooling device 3, the user pulls out the recovery duct 315 and the supply duct 316 of the cooling device 3 from the first communication hole 211 and the second communication hole 212, respectively. At this time, the magnets and the magnetic material that are in contact with each other or are close to each other are separated from each other. With the above, the removal of the cold insulation box 2 from the cooling device 3 is completed.

As described above, the cooling system of the present embodiment has a magnetic force detachable portion as a detachable structure that enables the cooling device 3 to be detachably attached to the cold insulation box 2 in a manual manner that does not require a tool for attachment / detachment. Is provided. Such a tool-less attachment / detachment structure facilitates attachment / detachment of the cooling device and the cold insulation box.

In the present embodiment, the first magnet 61, the second magnet 62, the third magnet 63, and the fourth magnet 64 are attached to the cold insulation box 2, and the first magnetic body 65, the second magnetic body 66, and the third magnetic body are attached. 67, the fourth magnetic body 68 is attached to the cooling device 3. However, conversely, the first magnet 61, the second magnet 62, the third magnet 63, and the fourth magnet 64 are attached to the cold insulation box 2, and the first magnetic body 65, the second magnetic body 66, and the third magnetic body 67, The fourth magnetic material 68 may be attached to the cooling device 3.

Further, each of the first magnetic body 65, the second magnetic body 66, the third magnetic body 67, and the fourth magnetic body 68 may be replaced with magnets. At that time, these magnets are attached to the cooling device 3 in an arrangement and posture so as to attract the magnets facing each other when the cooling device 3 is attached to the cold insulation box 2.

Further, when the casing 31 is made of a magnetic material, the first magnetic material 65, the second magnetic material 66, the third magnetic material 67, and the fourth magnetic material 68 may be abolished. When the cold insulation box 2 is made of a magnetic material, the first magnetic material 65, the second magnetic material 66, the third magnetic material 67, and the fourth magnetic material 68 are abolished, and the first magnetic material 65 and the second magnetic material 65 are eliminated. Each of the magnetic body 66, the third magnetic body 67, and the fourth magnetic body 68 may be replaced with a magnet.

Further, the number of magnets attached to the cold insulation box 2 and the number of magnetic materials attached to the cooling device 3 are not limited to four, respectively.

(Fifth Embodiment)
Next, the fifth embodiment will be described with reference to FIGS. 13 and 14. The detachable attachment of the cooling device 3 to the cold insulation box 2 in the present embodiment is removable by the user by the hook-and-loop fastener attachment / detachment portions shown in FIGS. 13 and 14 in addition to the press-fitting as in the first and second embodiments. Installation is possible. The hook-and-loop fastener attachment / detachment portion corresponds to the attachment / detachment structure.

The hook-and-loop fastener attachment / detachment portion includes a first one-sided side fastener member 71, a second one-sided side fastener member 72, a third one-sided side fastener member 73, and a fourth one-sided side fastener member 74. Further, the surface fastener attachment / detachment portion includes a first other side surface fastener member 75, a second other side surface fastener member 76, a third other side surface fastener member 77, and a fourth other side surface fastener member 78.

As shown in FIG. 13, the first to fourth side fastener members 71 to 74 are attached apart from each other in the portion of the front wall 21 of the cold insulation box 2 facing the cooling device 3. A plurality of (for example, a large number of 10 or more) protrusions are formed on the surfaces of the first to fourth side fastener members 71 to 74 on the cooling device 3 side.

As shown in FIG. 14, the first to fourth side surface fastener members 75 to 78 are attached to each other on the wall of the casing 31 facing the cold insulation box 2, that is, the back side. A plurality of (for example, a large number of 10 or more) protrusions are formed on the surfaces of the first to fourth side fastener members 75 to 78 on the cold insulation box 2 side.

The first to fourth one side fastener members 71 to 74 are arranged so as to face the first to fourth other side fastener members 75 to 78, respectively, when the cooling device 3 is mounted on the cold insulation box 2. Has been done. The one-side fastener member and the other-side fastener member facing each other can be engaged with each other by engaging the plurality of protrusions with each other.

Various shapes of protrusions formed on the first to fourth one side surface fastener members 71 to 74 and the first to fourth other side surface fastener members 75 to 78 can be adopted. For example, one of the one side fastener member and the other side surface fastener member facing each other may be formed in a loop shape, and the other protrusion may be formed in a hook shape. Further, for example, each of the protrusions of both the one side fastener member and the other side fastener member facing each other may be formed so as to be thickened at the tip portion in a mushroom shape.

At this time, the first to fourth side surface fastener members 75 to 78 come into contact with the first to fourth side surface fastener members 71 to 74, respectively. Then, the one-side fastener member and the other-side fastener member that are in contact with each other are engaged with each other. By this engagement, the attachment of the cooling device 3 to the cold insulation box 2 becomes stronger.

When removing the cold insulation box 2 from the cooling device 3, the user pulls out the recovery duct 315 and the supply duct 316 of the cooling device 3 from the first communication hole 211 and the second communication hole 212, respectively. At this time, the one-side fastener member and the other-side fastener member that were in contact with each other are separated from each other. With the above, the removal of the cold insulation box 2 from the cooling device 3 is completed.

As described above, in the cooling system of the present embodiment, the surface fastener is attached / detached as a detachable structure that enables the cooling device 3 to be detachably attached to the cold insulation box 2 in a manual form that does not require a tool for attachment / detachment. A part is provided. Such a tool-less attachment / detachment structure facilitates attachment / detachment of the cooling device and the cold insulation box.

The number of one side fastener members attached to the cold insulation box 2 and the number of other side fastener members attached to the cooling device 3 are not limited to four, respectively.

(Sixth Embodiment)
Next, the sixth embodiment will be described with reference to FIGS. 15, 16, and 17. The detachable attachment of the cooling device 3 to the cold insulation box 2 in the present embodiment is performed by the clamp type attachment / detachment portion shown in FIGS. 15, 16 and 17 in addition to the press-fitting as in the first and second embodiments. Can be attached and detached. The clamp-type detachable portion corresponds to the detachable structure.

The clamp type detachable portion has a first frame member 80 and a second frame member 89. As shown in FIGS. 15 and 16, the first frame member 80 has a rectangular frame shape surrounding the first communication hole 211 and the second communication hole 212, and is from the front wall 21 of the cold insulation box 2 to the cooling device 3 side. It is fixed to the front wall 21 so as to project to the front wall 21. The first frame member 80 is formed with a first recessed portion 81, a second recessed portion 82, a third recessed portion 83, and a fourth recessed portion 84. Each of the first to fourth recesses 81 to 84 corresponds to one side engaging portion.

The first to fourth recessed portions 81 to 84 are holes formed on the outer peripheral side of the first frame member 80 and recessed toward the inner peripheral side. For example, the first recessed portion 81 is formed so as to be recessed downward on the upper side of the upper side of the first frame member 80. The recessing directions of the first to fourth recessed portions 81 to 84 intersect with respect to the opposite direction of the front wall 21 of the cold insulation box 2 and the back surface of the casing 31 of the cooling device 3. The angle of intersection may be 90 ° or any other angle.

As shown in FIG. 17, the second frame member 89 has a rectangular frame shape surrounding the recovery duct 315 and the supply duct 316, and projects from the back surface of the casing 31 of the cooling device 3 toward the cold insulation box 2. It is fixed to the back surface. The inner peripheral surface of the second frame member 89 has substantially the same shape as the outer peripheral surface of the first frame member 80. As a result, when the cooling device 3 is attached to the cold insulation box 2, the first frame member 80 fits on the inner peripheral side of the second frame member 89.

The second frame member 89 is formed with a first protrusion 85, a second protrusion 86, a third protrusion 87, and a fourth protrusion 88. These first to fourth protrusions 85 to 88 are also components of the clamp type detachable portion. Each of the first to fourth protrusions 85 to 88 corresponds to the other side engaging portion.

The first to fourth protrusions 85 to 88 are members formed on the inner peripheral side of the second frame member 89 and projecting toward the inner peripheral side. For example, the first protrusion 85 is formed so as to project downward on the lower side of the upper side of the second frame member 89. The protruding directions of the first to fourth protrusions 85 to 88 intersect with respect to the direction in which the front wall 21 of the cold insulation box 2 and the back surface of the casing 31 of the cooling device 3 face each other. The angle of intersection may be 90 ° or any other angle.

Here, the procedure for attaching / detaching the cooling device 3 and the cold insulation box 2 will be described. In the description of this procedure, it is assumed that the configuration other than the clamp type detachable portion in the cooling system of the present embodiment is the same as that of the first embodiment, but it may be the same as that of the second embodiment.

When the cooling device 3 is mounted on the cold insulation box 2, the user inserts the recovery duct 315 and the supply duct 316 of the cooling device 3 into the first communication hole 211 and the second communication hole 212, respectively. At this time, the first frame member 80 fits into the inner circumference of the second frame member 89, and the first to fourth protrusions 85 to 88 fit into the first to fourth recesses 81 to 84, respectively. As a result, the cooling device 3 is positioned and mounted on the cold insulation box 2.

As described above, the protruding directions of the first to fourth protrusions 85 to 88 and the recessing directions of the first to fourth recesses 81 to 84 are in the directions opposite to the front wall 21 of the cold insulation box 2 and the back surface of the casing 31. It intersects with each other. Therefore, when the cooling device 3 is positioned and mounted on the cold insulation box 2, the protruding portion and the recessed portion that fit each other are engaged with each other with respect to the direction in which the front wall 21 and the back surface of the casing 31 face each other. By this engagement, the attachment of the cooling device 3 to the cold insulation box 2 becomes stronger. That is, the engagement between the protruding portion and the recessed portion that fit each other becomes a resistance against the force in the direction of removing the cooling device 3 from the cold insulation box 2.

When removing the cold insulation box 2 from the cooling device 3, the user pulls out the recovery duct 315 and the supply duct 316 of the cooling device 3 from the first communication hole 211 and the second communication hole 212, respectively. At this time, the fitting of the first frame member 80 and the second frame member 89 and the engagement between the protruding directions of the first to fourth protrusions 85 to 88 and the first to fourth recesses 81 to 84 are eliminated. Will be done. With the above, the removal of the cold insulation box 2 from the cooling device 3 is completed.

As described above, the cooling system of the present embodiment has a clamp-type attachment / detachment structure as a attachment / detachment structure that enables the cooling device 3 to be detachably attached to the cold insulation box 2 in a manual manner that does not require a attachment / detachment tool. A part is provided. Then, the cooling device 3 is detachably attached to the cold insulation box 2 by engaging the protrusions and the recesses that fit each other with each other. Such a tool-less attachment / detachment structure facilitates attachment / detachment of the cooling device and the cold insulation box.

The number of recesses attached to the cold insulation box 2 and the number of protrusions attached to the cooling device 3 are not limited to four, respectively. Further, the cold insulation box 2 may have a protrusion instead of a recess, and the cooling device 3 may have a recess instead of a protrusion.

(Other embodiments)
The present disclosure is not limited to the above-described embodiment, and can be changed as appropriate. Further, in the above-described embodiment, the elements constituting the embodiment are not necessarily essential except when it is clearly stated that they are essential and when it is clearly considered to be essential in principle. Further, in the above embodiment, when numerical values such as the number, numerical value, amount, and range of the constituent elements of the embodiment are mentioned, when it is clearly stated that they are particularly essential, and in principle, the number is clearly limited to a specific number. It is not limited to the specific number except when In particular, when a plurality of values are exemplified for a certain quantity, it is also possible to adopt a value between the plurality of values unless otherwise specified or when it is clearly impossible in principle. .. Further, in the above embodiment, when referring to the shape, positional relationship, etc. of a component or the like, the shape, position, etc., unless otherwise specified or limited in principle to a specific shape, positional relationship, etc. It is not limited to relationships. Further, in the above embodiment, when it is described that the external environment information of the vehicle (for example, the humidity outside the vehicle) is acquired from the sensor, the sensor is abolished and the external environment information is received from the server or the cloud outside the vehicle. It is also possible to do. Alternatively, it is possible to abolish the sensor, acquire related information related to the external environment information from a server or cloud outside the vehicle, and estimate the external environment information from the acquired related information. The present disclosure also allows the following modifications and equal range modifications to the above embodiments. In addition, the following modified examples can be independently selected to be applied or not applied to the above embodiment. That is, any combination of the following modifications except for clearly contradictory combinations can be applied to the above embodiment.

(Modification example 1)
The inside air flowing in the cold insulation box 2 and the cooling device 3 is air in the above embodiment, but may be a gas other than air. Further, the outside air flowing inside the cold insulation box 2 and outside the cooling system was air in the above embodiment, but may be a gas other than air.

(Modification 2)
In the above embodiment, the outside air introduction hole 311 and the outside air discharge hole 312 are formed on the side surface 31b and the back surface of the casing 31, respectively. However, this does not necessarily have to be the case. For example, the outside air introduction hole 311 may be formed on the back surface of the casing 31, and the outside air discharge hole 312 may be formed on the side surface 31b of the casing 31. Further, for example, both the outside air introduction hole 311 and the outside air discharge hole 312 may be formed on the back surface of the casing 31. Further, for example, both the outside air introduction hole 311 and the outside air discharge hole 312 may be arranged on the side surface 31b of the casing 31.

For example, the positions of the outside air introduction hole 311 and the position of the outside air discharge hole 312 may be opposite to those of the above embodiment. That is, the outside air discharge hole 312 may be arranged in the portion where the outside air introduction hole 311 is arranged in the above embodiment, and the outside air introduction hole 311 may be arranged in the portion where the outside air discharge hole 312 is arranged in the above embodiment. ..

(Modification 3)
In the above embodiment, an example is shown in which the cold insulation box 2 and the cooling device 3 can be easily attached and detached by a user without using a tool. However, as an example in which the user can attach and detach the cold insulation box 2 and the cooling device 3, a tool may be used. For example, the cold insulation box 2 and the cooling device 3 may be detachable by the user using a screwdriver to fasten and unscrew the cooling device 3 to the cold insulation box 2. As described above, the detachability is not limited to the one without a tool, and may be a non-destructive attachment / detachment using a tool. Destructive attachment / detachment refers to attachment / detachment in which the cooling system is damaged in either attachment / detachment.

(Modification example 4)
In the above embodiment, the condenser 36 is arranged below the evaporator 38 in the cooling device 3. However, the arrangement of the condenser 36 and the evaporator 38 does not necessarily have to be this way. For example, the condenser 36 may be arranged above the evaporator 38. In this case, the duct arranged in the casing 31 may guide the inside air cooled by the evaporator 38 to the inside air supply hole 314.

Alternatively, the condenser 36 and the evaporator 38 may be arranged so as to overlap each other in a direction orthogonal to the front wall 21 of the cold insulation box 2.

(Modification 5)
In the above embodiment, the outer edge portion of the front wall 21 projects from the side surface of the cooling device 3 where the outside air introduction hole 311 is formed. However, this does not necessarily have to be the case. For example, the outer edge of the front wall 21 may be flush with the side surface of the cooling device 3.

(Modification 6)
In the above embodiment, the condenser unit composed of the condenser 36 and the exhaust fan 39 and the evaporator unit composed of the evaporator 38 and the blowout fan 40 are housed in the same casing 31. However, the condenser unit and the evaporator unit may be housed in different casings.

(Modification 7)
In the above embodiment, the exhaust fan 39 is a suction type arranged on the downstream side of the air flow of the condenser 36. However, the exhaust fan 39 may be a push-in type arranged on the upstream side of the air flow of the condenser 36. The same applies to the blowout fan 40.

(Modification 8)
In the above embodiment, the outside air enters the outside air introduction hole 311 and then passes through the compressor 35 and the condenser 36 in this order, and then exits from the outside air discharge hole 312 to the outside of the casing 31. However, the outside air may enter the outside air introduction hole 311 and then pass through the battery 32, the compressor 35, and the condenser 36 in this order, and then go out of the casing 31 from the outside air discharge hole 312.

(Modification 9)
The battery 32 may be removed from the cooling device 3. In that case, the cooling device 3 may receive power from an external power source (for example, a system power source).

(Modification example 10)
In the above embodiment, the condenser 36 is shown as an example of the heat dissipation unit, and the evaporator 38 is shown as an example of the cooling unit. However, the heat radiating unit and the cooling unit may be other than the combination of the condenser 36 and the evaporator 38. For example, the heat dissipation unit and the cooling unit may be heat dissipation units in the water circuit.

(Modification 11)
In the above embodiment, a small mobile cooling system is disclosed as an example of the cooling system. However, the cooling system does not have to be mobile or small.

(Summary)
According to the first aspect shown in a part or all of the above-described embodiments, the wall (21) facing the cooling device and separating the inside and the outside of the cold storage box is formed from the inside of the cold storage box. A first communication hole (211) through which the gas recovered by the cooling device passes, and a second communication hole (212) through which the gas supplied from the cooling device to the cold insulation box after being cooled by the cooling device passes through. , Is formed.

Due to the existence of such a wall, even if the cooling device is removed from the cold storage box, the gas inside the cold storage box is unlikely to flow out to the outside of the cold storage box. Therefore, the cooling device can be removed while suppressing the deterioration of the cold insulation function of the cold insulation box.

Further, according to the second aspect, the gas is the first gas, and the cooling device includes the casing (31) and the first gas and the refrigerant recovered from the inside of the cold insulation box in the casing. From the refrigerant by exchanging heat between the cooling unit (38) that cools the first gas by exchanging heat with the refrigerant and the second gas outside the cold insulation box and the cooling device in the casing. The casing is provided with a heat radiating portion (36) that takes heat, and the casing has an outside air introduction hole (311) for introducing the second gas into the radiating portion from the outside of the casing, and the refrigerant and heat in the radiating portion. An outside air discharge hole (312) for discharging the exchanged air to the outside of the casing is formed. By arranging the refrigerant, the cooling unit, and the heat radiating unit in the casing of the cooling device in this way, the first gas can be cooled by using the second gas.

Further, according to the third aspect, at least one of the outside air introduction hole and the outside air discharge hole is formed on the side surface of the casing that intersects the surface of the cold insulation box facing the wall. Since the side surface is offset so as to be recessed with respect to the surface of the wall of the cold insulation box on which the side surface of the casing faces, a gap is formed around the outside air introduction hole. The pressure loss of the air introduced into the casing from the outside air introduction hole is reduced.

This makes it difficult to place an obstacle in close proximity to at least one of the holes formed on the side surface of the casing due to the presence of the outer edge of the cold storage box. Therefore, outside the casing, voids are likely to be formed around at least one of the holes, and the pressure loss of the second gas introduced into the casing and discharged can be reduced.

Further, according to the fourth viewpoint, the cooling unit and the heat radiating unit are arranged in a direction along the wall of the cold insulation box. As a result, the casing can be made thinner in the orthogonal direction as compared with the case where the cooling unit and the heat radiating unit are arranged in the direction orthogonal to the wall of the cold insulation box. As a result, the physique of the cooling system in the direction in which the cold insulation box and the cooling device overlap can be suppressed.

Further, according to the fifth aspect, the cooling unit is hotter than the heat radiating unit during the operation of the cooling device, and the cooling unit is arranged above the heat radiating unit. By doing so, the cold air in the cooling unit is lowered to cool the heat radiation unit, and the ability of the cooling device to cool the first gas is improved.

Further, according to the sixth aspect, the surface on which the outside air introduction hole is formed in the casing and the surface on which the outside air discharge hole is formed in the casing face in different directions. In this way, a phenomenon in which the high-temperature second gas discharged from the outside air discharge hole is immediately introduced into the casing from the outside air introduction hole, that is, a short circuit is less likely to occur.

Further, according to the seventh aspect, the cooling device has a compressor (35) that compresses the refrigerant flowing out of the cooling unit and sends it to the heat radiating unit, and the outside air is being operated while the cooling device is operating. The second gas introduced into the casing from the introduction hole passes through the heat-dissipating portion after passing through the compressor, and then is discharged to the outside of the casing from the outside air discharge hole without passing through the compressor. Since the second gas passing through the compressor in this way is the second gas before the temperature rises through the heat radiating portion, the influence of the raised second gas on the compressor can be suppressed.

Further, according to the eighth aspect, the wall has a first communication hole through which the gas recovered from the inside of the cold insulation box passes through the cooling device, and the cooling device after being cooled by the cooling device. A second communication hole through which the gas supplied to the cold insulation box passes is formed.

In this way, by providing the two communication holes, the first communication hole and the second communication hole, on the wall, the degree of freedom of arranging the positions of the first communication hole and the second communication hole at positions where shortcuts can be sufficiently reduced can be obtained. Occurs.

Further, according to the ninth aspect, the gas recovered from the inside of the cooling device to the cooling device passes through the wall, and after being cooled by the cooling device, the gas is supplied from the cooling device to the cooling box. A single communication hole is formed through which the gas is passed.

In this way, the number of communication holes provided in the wall for passing gas between the inside of the cold storage box and the cooling device is one, so that the position tolerance of the communication holes allowed in the design of the cold storage box and the position tolerance of the communication holes are allowed. The dimensional tolerance can be set large.

Further, according to the tenth viewpoint, the cooling system includes a detachable structure that enables the cooling device to be detachably attached to the cold insulation box in a form that does not require a tool for attachment / detachment. Such a tool-less attachment / detachment structure facilitates attachment / detachment of the cooling device and the cold insulation box.

Further, according to the eleventh aspect, the detachable structure is wound around at least one of the cold insulation box and the cooling device so that the cold insulation box and the cooling device come closer to each other. It has a belt part that urges. Such a belt portion facilitates attachment / detachment of the cooling device and the cold insulation box.

Further, according to the twelfth aspect, the detachable structure has a magnetic force detachable portion capable of detachably attaching the cooling device to the cold insulation box by a magnetic force. Such a magnetic force attachment / detachment portion facilitates attachment / detachment of the cooling device and the cold insulation box.
Further, according to the thirteenth viewpoint, the cold insulation box has a one-side side fastener member, and the cooling device can be engaged with the one-side side fastener member so as to face the one-side side fastener member and is separated from the one-side side fastener member. The cooling device can be detachably attached to the cold insulation box by having a possible other side fastener member and engaging the one side fastener member and the other side fastener member so as to face each other. .. Such a hook-and-loop fastener attachment / detachment portion facilitates attachment / detachment of the cooling device and the cold insulation box.

Further, according to the fourteenth aspect, the cooling system is attached to the cold insulation box and is oriented in a direction intersecting the opposite direction of the wall of the cold insulation box and the back surface of the cooling device facing the wall. One-sided engaging portion that extends and the other-side engaging portion that is attached to the cooling device and extends in a direction intersecting the opposite direction of the wall of the cooling box and the back surface of the cooling device facing the wall. The cooling device can be detachably attached to the cold insulation box by engaging the one-side engaging portion and the other-side engaging portion with each other. Such a hook-and-loop fastener attachment / detachment portion facilitates attachment / detachment of the cooling device and the cold insulation box.

Claims

A cooling system that cools the object to be cooled,
A cold storage box (2) for accommodating the cooling target and
A cooling device (3) for collecting gas from the inside of the cold insulation box, cooling the outside of the cold insulation box, and supplying the cooled gas into the cold insulation box is provided.
The cooling device can be detachably attached to the cold storage box.
The cooling box is a cooling system having a wall (21) facing the cooling device and partitioning the inside and the outside of the cooling box.
The gas is the first gas and
The cooling device
Casing (31) and
A cooling unit (38) that cools the first gas by exchanging heat between the first gas recovered from the inside of the cold insulation box and the refrigerant in the casing.
A heat radiating unit (36) that takes heat from the refrigerant by exchanging heat between the refrigerant and the second gas outside the cold insulation box and the cooling device inside the casing.
With
The casing has an outside air introduction hole (311) for introducing the second gas into the heat radiating portion from the outside of the casing, and an outside air discharge hole for discharging air that has exchanged heat with the refrigerant in the heat radiating portion to the outside of the casing. The cooling system according to claim 1, wherein (312) is formed.
At least one of the outside air introduction hole and the outside air discharge hole is formed on the side surface (31b) of the casing that intersects the surface of the cold insulation box facing the wall.
The side surface (31b) is attached so as to be offset from the surface (22) of the wall of the cold insulation box (2) on the side of the casing facing the side surface, so that the outside air is formed. The cooling system according to claim 2, wherein a gap is formed around the introduction hole, and the pressure loss of the air introduced into the casing from the outside air introduction hole is reduced.
The cooling system according to claim 2 or 3, wherein the cooling unit and the heat radiating unit are arranged in a direction along the wall of the cold insulation box.
During the operation of the cooling device, the cooling unit is cooler than the heat radiating unit.
The cooling system according to any one of claims 2 to 4, wherein the cooling unit is arranged above the heat dissipation unit.
The cooling system according to any one of claims 2 to 5, wherein the surface on which the outside air introduction hole is formed and the surface on which the outside air discharge hole is formed in the casing are oriented in different directions.
The cooling device has a compressor (35) that compresses the refrigerant flowing out of the cooling unit and sends it to the heat radiating unit.
During the operation of the cooling device, the second gas introduced into the casing from the outside air introduction hole passes through the surface of the compressor and then through the heat radiating portion, and then passes through the surface of the compressor and does not pass through the surface of the compressor. The cooling system according to any one of claims 2 to 6, wherein the cooling system is discharged from the discharge hole to the outside of the casing.
The wall has a first communication hole (211) through which the gas recovered from the inside of the cold storage box passes through the cooling device, and is supplied to the cold storage box from the cooling device after being cooled by the cooling device. The cooling system according to any one of claims 1 to 7, wherein a second communication hole (212) through which the gas passes is formed.
A single communication through the wall is passed through the gas recovered from the inside of the cold storage box to the cooling device and through the gas supplied from the cooling device to the cold storage box after being cooled in the cooling device. The cooling system according to any one of claims 1 to 7, wherein the hole (213) is formed.
The claim is provided with a detachable structure (50, 61 to 68, 71 to 78, 80 to 89) capable of detachably attaching the cooling device to the cold insulation box in a form that does not require a detachable tool. The cooling system according to any one of 1 to 9.
The detachable structure has a belt portion (50) that urges the cold insulation box and the cooling device in a direction in which the cold insulation box and the cooling device are brought closer to each other by being wound around at least one of the cold insulation box and the cooling device. The cooling system according to claim 10.
The cooling system according to claim 10 or 11, wherein the desorption structure has a magnetic desorption portion (61 to 68) capable of detachably attaching the cooling device to the cold storage box by a magnetic force.
The cold storage box has one side fastener member (71 to 74) and has.
The cooling device has a other side fastener member (75 to 78) that can be engaged with the one side fastener member and can be peeled off from the one side fastener member.
Any one of claims 10 to 12, wherein the cooling device can be detachably attached to the cold insulation box by engaging the one side fastener member and the other side fastener member so as to face each other. One of the cooling systems described.
One-sided engaging portions (81 to 84) attached to the cold insulation box and extending in a direction intersecting the opposite direction of the wall of the cold insulation box and the back surface of the cooling device facing the wall.
The other side engaging portion (85 to 88) attached to the cooling device and extending in a direction intersecting the opposite direction of the wall of the cooling box and the back surface of the cooling device facing the wall. Prepare,
Any of claims 10 to 13, wherein the cooling device can be detachably attached to the cold storage box by engaging the one-side engaging portion and the other-side engaging portion with each other. The cooling system according to one.